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The applications of POD method in dual rotor-bearing systems with coupling misalignment

机译：POD方法在双转子系统中的应用耦合未对准

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摘要

In this paper, the proper orthogonal decomposition (POD) method is first time apply to the dimension reduction of dual rotor-bearing experiment rig which is similar to an aeroengine rotor. The basic theory of the POD method and the application in dynamical system are introduced. The supporting bearing nonlinearity and the coupling misalignment of high and low pressure rotors are considered, and the dynamical model is established by finite element method based on dual rotor experiment rig. The frequency behaviors of dual rotor-bearing coupling misalignment response are discussed via comparing the numerical and experiment results to verify the efficiency of the model. The POD method is used for dimension reduction of rotor-bearing system, and the dynamical behaviors of the reduced-order model (ROM) are compared with the full order system (FOM) and experiment to verify the higher computational efficiency and accuracy of the POD method. These results in this paper can provide engineering guidance to actual dual rotor-bearing system with coupling misalignment fault.
机译：在本文中，适当的正交分解（POD）方法是第一次适用于双转子轴承实验钻机的尺寸减小，其类似于航空发动机转子。介绍了POD方法的基本理论及动态系统中的应用。考虑了基于双转子实验钻机的有限元法建立了高压转子的支撑轴承非线性和高压转子的耦合未对准。通过比较数值和实验结果来讨论双转子耦合未对准响应的频率行为，以验证模型的效率。 POD方法用于转子轴承系统的尺寸减小，并且将阶阶模型（ROM）的动态行为与完整订单系统（FOM）进行比较，并进行实验，以验证豆荚的更高的计算效率和准确性方法。本文的这些结果可以为具有耦合未对准故障的实际双转子系统提供工程指导。

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  • 来源
    《Mechanical systems and signal processing》 |2021年第3期|107236.1-107236.17|共17页
  • 作者

    Kuan Lu; Yulin Jin; Panfeng Huang; Fan Zhang; Haopeng Zhang; Chao Fu; Yushu Chen;

  • 作者单位

    Institute of Vibration Engineering. Northwestern Polytechnical University Xi'an 710072 China School of Astronautics Harbin Institute of Technology Harbin 150001 China;

    School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 China School of Astronautics Harbin Institute of Technology Harbin 150001 China;

    Research Center for Intelligent Robotics School of Astronautics Northwestern Polytechnical University) China National Key Laboratory of Aerospace Flight Dynamics Northwestern Polytechnical University China;

    Research Center for Intelligent Robotics School of Astronautics Northwestern Polytechnical University) China National Key Laboratory of Aerospace Flight Dynamics Northwestern Polytechnical University China;

    Institute of Vibration Engineering. Northwestern Polytechnical University Xi'an 710072 China;

    Institute of Vibration Engineering. Northwestern Polytechnical University Xi'an 710072 China;

    School of Astronautics Harbin Institute of Technology Harbin 150001 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    POD method; Rotor-bearing system; Dimension reduction; Misalignment; Nonlinear dynamics;

    机译：POD方法;转子系统;尺寸减少;错位;非线性动力学;

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